Fair Value Measurements - Valuation of Company's Assets and Liabilities Measured at Fair Value (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Assets
Money market funds	$ 18,634	$ 59,173
Assets Fair Value Total	155,396	142,965
Liabilities
Contingent consideration payable	0	12,340
Total liabilities		14,028
Mutual Funds Held In Rabbi Trust [Member]
Assets
Trading securities, Fair value	10,485	9,383
U.S. Treasuries [Member]
Assets
Trading securities, Fair value	99,682	74,409
Foreign Currency Forward Position [Member]
Assets
Foreign currency forward position	1,901
Liabilities
Foreign currency forward position		1,688
Corporate Debt [Member]
Assets
Securities available-for-sale	24,694
Trading securities, Fair value	24,694
Level 1 [Member]
Assets
Money market funds	18,634	59,173
Assets Fair Value Total	18,634	59,173
Level 2 [Member]
Assets
Assets Fair Value Total	136,762	83,792
Liabilities
Total liabilities		1,688
Level 2 [Member] \| Mutual Funds Held In Rabbi Trust [Member]
Assets
Trading securities, Fair value	10,485	9,383
Level 2 [Member] \| U.S. Treasuries [Member]
Assets
Trading securities, Fair value	99,682	74,409
Level 2 [Member] \| Foreign Currency Forward Position [Member]
Assets
Foreign currency forward position	1,901
Liabilities
Foreign currency forward position		1,688
Level 2 [Member] \| Corporate Debt [Member]
Assets
Securities available-for-sale	$ 24,694
Level 3 [Member]
Liabilities
Contingent consideration payable		12,340
Total liabilities		$ 12,340

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of liability recognized arising from contingent consideration in a business combination.

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Fair value of financial and nonfinancial obligations.

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